"But vanity aside; Ash you're hilarious as hell, talented, eclectic, a progressive thinker, and someone who supports women in their choice to do what they want with their OWN bodies (tons [sic] of men don't share that sentiment).

"So cheers to you! I'm proud to call you my friend. 😎."

The doctor reposted her message, writing: "Thank you a mill for everything! Your bold confidence is to be respected! My BDay is complete. Those like you who stand apart and trailblaze their own path no matter who tries to block or impede it, ALWAYS come out ahead , most importantly for themselves."

Unlike many celebrities, Iggy has been outspoken about her nose job and breast implants.

Earlier this year, she told Ellen: "There was nothing wrong with me. I think it's a personal choice and anybody, man or woman, they should be able to make an informed decision, and if you want to change something, then that's up to you."

And if you want even more candidness from the former Mullumbimby girl, get a load of her GQ Woman of The Year speech last week, in which she praised her "award-winning vagina":

Iggy flew back to LA right after The X Factor Australia finale a week ago, following months of rumours about diva behaviour and feuds on the judging panel.

Iggy Azalea goes braless at GQ's Men of the Year Awards...with Chris Evans and Jon Hamm